None of the Python files were committed with the executable bit set, and
only yaml_to_classes.py was intended to be executed.
Also sets the executable bit on yaml_to_classes.py and changes the
shebang to run python3 instead of python.
Added a class representation of a libc header file, allowing for easier
conversion from YAML to .h file output.
Classes include:
- Function (representing function headers)
- Include (representing various include statements found on a header
file)
- Macro (representing macro definitions)
- Enumeration (representing enum definitions)
- Type (representing include statements for NamedTypes)
- Object (representing ObjectSpec defintitions)
